In message , Tony. writes

"raden" wrote in message
...
In message , Tony. writes
Thanks for response,

But the pressure relief vavle pipe is as dry as a bone, there is
definitely
no water leaking from there


"raden" wrote in message
...
In message , Tony. writes
I have a Glow worm swift flow, the problem is when the boiler is off,
the
pressure drops quite dramtically there is NO visual evidence of any
leaks,
then when the boiler is switched on the pressure can in crease to as
much
as
3bar, one radiator upstairs never comes on, despite being bled and water
coming out, both pipes never to radiator never get warm.

What do you think.

Expansion vessel isn't pressurised

Don't top post if you want meaningful replies ...

Who said anything about the pressure relief valve, the pressure vessel is
normally at the back of the boiler and absorbs the increased pressure as
the temperature rises


--
geoff

Well if you dont top post you wont see who i was replying too,

Fenboozler, remarked that water would be released frpn
m the pressure relief vavle when cooling.,


Bye then ...


--
geoff